For people who are serious about taxonomy (the science of classification), ‘A Guidebook to Learning’ is must reading.

By Erik J. Heels

Adler’s other books include “Ten Philosophical Mistakes” and “Six Great Ideas,” and he has served as chairman of the board of editors of Encyclopedia Britannica (http://www.eb.com/), director of the Institute of Philosophical Research, and senior associate of the Aspen Institute for Humanistic Studies (http://www.aspeninst.org/). In “A Guidebook to Learning,” Adler traces the history of the organization of knowledge from Greek and Roman antiquity to modern times. Ever wonder why a Ph.D. is a doctorate of philosophy? This book is for you.

“A Guidebook to Learning: For a Lifelong Pursuit of Wisdom” by Mortimer J. Adler.